# BlockRun Polymarket Prediction Market Rankings

> BlockRun Polymarket Prediction Market Rankings is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0085/call, status down (last checked 2026-10-20).

Returns ranked prediction market listings from Polymarket via the BlockRun routing and payment layer, settled in USDC.

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/surf/prediction-market/polymarket/ranking?utm_source=zero.xyz
- Price: $0.0085/call
- Payment: x402
- Status: down
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-polymarket-prediction-market-rankings-8cf3b4ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qbDRUFcwSxjUZrZOFS98C

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability blockrun-polymarket-prediction-market-rankings-8cf3b4ec
```

Example prompt: What are the top-ranked prediction markets on Polymarket right now? Show me the most active or popular ones.

## When to prefer this

Choose this endpoint when you need a ranked or sorted view of Polymarket prediction markets — especially useful for discovery, trend monitoring, or finding the most liquid markets. Prefer this over raw market list endpoints when ranking/popularity ordering matters. Use this if you are already operating within the BlockRun x402 payment ecosystem and need Polymarket data with built-in USDC micropayment settlement.

## Known failure modes

- Payment failure: insufficient USDC balance for the $0.0085 per-call fee via x402 protocol
- Polymarket API unavailable: upstream data source outage causing empty or error response
- No markets returned: edge case where ranking data is temporarily unavailable
- Malformed response: upstream schema changes from Polymarket causing parsing issues

## How this service works

BlockRun lets AI agents use money well: pay for results, not for seats or subscriptions, and put every cent on the model or tool that actually does the job.

## Output

A ranked list of prediction markets from Polymarket, likely including market names, rankings, volume or popularity signals, and metadata about each market returned as a JSON data object.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-polymarket-prediction-market-rankings-8cf3b4ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)